Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10065724 | Arrangement for sealing a propeller shaft of a marine vessel and a method of controlling the operation thereof | Arnoud De Kruijf, Rik Roemen, Bart Van Der Ven, Joost Van Eijnatten, Masahiko Yotsuyanagi | 2018-09-04 |
| 8348281 | Seal ring and stern tube sealing device | Hisashi Yoshida, Motofumi Inaba | 2013-01-08 |
| D638522 | Seal ring for stern tube | Hisashi Yoshida, Motofumi Inaba | 2011-05-24 |
| D638523 | Seal ring for stern tube | Hisashi Yoshida, Motofumi Inaba | 2011-05-24 |
| D631948 | Seal ring for stern tube | Hisashi Yoshida, Motofumi Inaba | 2011-02-01 |
| 6481720 | Stern tube sealing apparatus | Hisashi Yoshida | 2002-11-19 |